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Diffstat (limited to 'pinentry/util.h')
-rw-r--r-- | pinentry/util.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/pinentry/util.h b/pinentry/util.h new file mode 100644 index 0000000..7986c99 --- /dev/null +++ b/pinentry/util.h @@ -0,0 +1,66 @@ +/* Quintuple Agent utilities + * Copyright (C) 1999 Robert Bihlmeyer <robbe@orcus.priv.at> + * Copyright (C) 2003 g10 Code GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _UTIL_H +#define _UTIL_H + +#include <sys/types.h> + +#ifndef HAVE_BYTE_TYPEDEF +# undef byte +# ifdef __riscos__ + /* Norcroft treats char == unsigned char but char* != unsigned char* */ + typedef char byte; +# else + typedef unsigned char byte; +# endif +# define HAVE_BYTE_TYPEDEF +#endif + +#ifndef HAVE_ULONG_TYPEDEF +# undef ulong + typedef unsigned long ulong; +# define HAVE_ULONG_TYPEDEF +#endif + + +ssize_t xwrite(int, const void *, size_t); /* write until finished */ +int debugmsg(const char *, ...); /* output a debug message if debugging==on */ +void drop_privs(void); /* finally drop privileges */ + + +/* To avoid that a compiler optimizes certain memset calls away, these + macros may be used instead. */ +#define wipememory2(_ptr,_set,_len) do { \ + volatile char *_vptr=(volatile char *)(_ptr); \ + size_t _vlen=(_len); \ + while(_vlen) { *_vptr=(_set); _vptr++; _vlen--; } \ + } while(0) +#define wipememory(_ptr,_len) wipememory2(_ptr,0,_len) +#define wipe(_ptr,_len) wipememory2(_ptr,0,_len) + + + + +#define xtoi_1(p) (*(p) <= '9'? (*(p)- '0'): \ + *(p) <= 'F'? (*(p)-'A'+10):(*(p)-'a'+10)) +#define xtoi_2(p) ((xtoi_1(p) * 16) + xtoi_1((p)+1)) + + +#endif |